Uncaught exception thrown in session handler.

Drupal\Core\Database\DatabaseExceptionWrapper: SQLSTATE[HY000]: General error: 2006 MySQL server has gone away: INSERT INTO {sessions} (sid, uid, hostname, session, timestamp) VALUES (:db_insert_placeholder_0, :db_insert_placeholder_1, :db_insert_placeholder_2, :db_insert_placeholder_3, :db_insert_placeholder_4); Array ( [:db_insert_placeholder_0] => JGB-EN1YPsII36-HtZl2VvKfzQU3mu8VOe0aWy9hYZs [:db_insert_placeholder_1] => 0 [:db_insert_placeholder_2] => 216.73.216.195 [:db_insert_placeholder_3] => _symfony_flashes|a:1:{s:5:"error";a:2:{i:0;O:25:"Drupal\Core\Render\Markup":1:{s:9:"*string";s:1835:"<em class="placeholder">Notice</em>: Trying to access array offset on value of type bool in <em class="placeholder">Drupal\webprofiler\DataCollector\RequestDataCollector-&gt;collect()</em> (line <em class="placeholder">47</em> of <em class="placeholder">modules/devel/webprofiler/src/DataCollector/RequestDataCollector.php</em>). <pre class="backtrace">Drupal\webprofiler\DataCollector\RequestDataCollector-&gt;collect(Object, Object, NULL) (Line: 165) Symfony\Component\HttpKernel\Profiler\Profiler-&gt;collect(Object, Object, NULL) (Line: 83) Drupal\webprofiler\EventSubscriber\ProfilerSubscriber-&gt;onKernelResponse(Object, &#039;kernel.response&#039;, Object) (Line: 76) Drupal\webprofiler\EventDispatcher\TraceableEventDispatcher-&gt;dispatch(&#039;kernel.response&#039;, Object) (Line: 191) Symfony\Component\HttpKernel\HttpKernel-&gt;filterResponse(Object, Object, 1) (Line: 259) Symfony\Component\HttpKernel\HttpKernel-&gt;handleException(Object, Object, 1) (Line: 79) Symfony\Component\HttpKernel\HttpKernel-&gt;handle(Object, 1, 1) (Line: 57) Drupal\Core\StackMiddleware\Session-&gt;handle(Object, 1, 1) (Line: 47) Drupal\Core\StackMiddleware\KernelPreHandle-&gt;handle(Object, 1, 1) (Line: 191) Drupal\page_cache\StackMiddleware\PageCache-&gt;fetch(Object, 1, 1) (Line: 128) Drupal\page_cache\StackMiddleware\PageCache-&gt;lookup(Object, 1, 1) (Line: 82) Drupal\page_cache\StackMiddleware\PageCache-&gt;handle(Object, 1, 1) (Line: 47) Drupal\Core\StackMiddleware\ReverseProxyMiddleware-&gt;handle(Object, 1, 1) (Line: 38) Drupal\webprofiler\StackMiddleware\WebprofilerMiddleware-&gt;handle(Object, 1, 1) (Line: 52) Drupal\Core\StackMiddleware\NegotiationMiddleware-&gt;handle(Object, 1, 1) (Line: 23) Stack\StackedHttpKernel-&gt;handle(Object, 1, 1) (Line: 708) Drupal\Core\DrupalKernel-&gt;handle(Object) (Line: 19) </pre>";}i:1;O:25:"Drupal\Core\Render\Markup":1:{s:9:"*string";s:1835:"<em class="placeholder">Notice</em>: Trying to access array offset on value of type bool in <em class="placeholder">Drupal\webprofiler\DataCollector\RequestDataCollector-&gt;collect()</em> (line <em class="placeholder">47</em> of <em class="placeholder">modules/devel/webprofiler/src/DataCollector/RequestDataCollector.php</em>). <pre class="backtrace">Drupal\webprofiler\DataCollector\RequestDataCollector-&gt;collect(Object, Object, NULL) (Line: 165) Symfony\Component\HttpKernel\Profiler\Profiler-&gt;collect(Object, Object, NULL) (Line: 83) Drupal\webprofiler\EventSubscriber\ProfilerSubscriber-&gt;onKernelResponse(Object, &#039;kernel.response&#039;, Object) (Line: 76) Drupal\webprofiler\EventDispatcher\TraceableEventDispatcher-&gt;dispatch(&#039;kernel.response&#039;, Object) (Line: 191) Symfony\Component\HttpKernel\HttpKernel-&gt;filterResponse(Object, Object, 1) (Line: 259) Symfony\Component\HttpKernel\HttpKernel-&gt;handleException(Object, Object, 1) (Line: 79) Symfony\Component\HttpKernel\HttpKernel-&gt;handle(Object, 1, 1) (Line: 57) Drupal\Core\StackMiddleware\Session-&gt;handle(Object, 1, 1) (Line: 47) Drupal\Core\StackMiddleware\KernelPreHandle-&gt;handle(Object, 1, 1) (Line: 191) Drupal\page_cache\StackMiddleware\PageCache-&gt;fetch(Object, 1, 1) (Line: 128) Drupal\page_cache\StackMiddleware\PageCache-&gt;lookup(Object, 1, 1) (Line: 82) Drupal\page_cache\StackMiddleware\PageCache-&gt;handle(Object, 1, 1) (Line: 47) Drupal\Core\StackMiddleware\ReverseProxyMiddleware-&gt;handle(Object, 1, 1) (Line: 38) Drupal\webprofiler\StackMiddleware\WebprofilerMiddleware-&gt;handle(Object, 1, 1) (Line: 52) Drupal\Core\StackMiddleware\NegotiationMiddleware-&gt;handle(Object, 1, 1) (Line: 23) Stack\StackedHttpKernel-&gt;handle(Object, 1, 1) (Line: 708) Drupal\Core\DrupalKernel-&gt;handle(Object) (Line: 19) </pre>";}}}_sf2_meta|a:3:{s:1:"u";i:1792085676;s:1:"c";i:1792085676;s:1:"l";s:7:"2000000";} [:db_insert_placeholder_4] => 1792085676 ) in Drupal\Core\Session\SessionHandler->write() (line 84 of /home/debian/www/htdocs/core/lib/Drupal/Core/Session/SessionHandler.php). 

Drupal\Core\Session\SessionHandler->write() (Line: 89)
Drupal\Core\Session\WriteSafeSessionHandler->write() (Line: 67)
Symfony\Component\HttpFoundation\Session\Storage\Proxy\SessionHandlerProxy->write()
session_write_close() (Line: 266)
Symfony\Component\HttpFoundation\Session\Storage\NativeSessionStorage->save() (Line: 198)
Drupal\Core\Session\SessionManager->save() (Line: 196)
Symfony\Component\HttpFoundation\Session\Session->save() (Line: 60)
Drupal\Core\StackMiddleware\Session->handle() (Line: 47)
Drupal\Core\StackMiddleware\KernelPreHandle->handle() (Line: 191)
Drupal\page_cache\StackMiddleware\PageCache->fetch() (Line: 128)
Drupal\page_cache\StackMiddleware\PageCache->lookup() (Line: 82)
Drupal\page_cache\StackMiddleware\PageCache->handle() (Line: 47)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle() (Line: 38)
Drupal\webprofiler\StackMiddleware\WebprofilerMiddleware->handle() (Line: 52)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle() (Line: 23)
Stack\StackedHttpKernel->handle() (Line: 708)
Drupal\Core\DrupalKernel->handle() (Line: 19)

Le site Web a rencontré une erreur inattendue. Veuillez essayer de nouveau plus tard.

RuntimeException: Unable to create the storage directory (/home/debian/www/htdocs/sites/default/files/profiler/40/3d). in Symfony\Component\HttpKernel\Profiler\FileProfilerStorage->write() (line 141 of vendor/symfony/http-kernel/Profiler/FileProfilerStorage.php). 
Symfony\Component\HttpKernel\Profiler\Profiler->saveProfile() (Line: 104)
Drupal\webprofiler\EventSubscriber\ProfilerSubscriber->onKernelFinishRequest() (Line: 76)
Drupal\webprofiler\EventDispatcher\TraceableEventDispatcher->dispatch() (Line: 209)
Symfony\Component\HttpKernel\HttpKernel->finishRequest() (Line: 193)
Symfony\Component\HttpKernel\HttpKernel->filterResponse() (Line: 130)
Symfony\Component\HttpKernel\HttpKernel->handleRaw() (Line: 68)
Symfony\Component\HttpKernel\HttpKernel->handle() (Line: 57)
Drupal\Core\StackMiddleware\Session->handle() (Line: 47)
Drupal\Core\StackMiddleware\KernelPreHandle->handle() (Line: 106)
Drupal\page_cache\StackMiddleware\PageCache->pass() (Line: 85)
Drupal\page_cache\StackMiddleware\PageCache->handle() (Line: 47)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle() (Line: 38)
Drupal\webprofiler\StackMiddleware\WebprofilerMiddleware->handle() (Line: 52)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle() (Line: 23)
Stack\StackedHttpKernel->handle() (Line: 166)
Drupal\Core\EventSubscriber\DefaultExceptionHtmlSubscriber->makeSubrequest() (Line: 122)
Drupal\Core\EventSubscriber\DefaultExceptionHtmlSubscriber->on404() (Line: 109)
Drupal\Core\EventSubscriber\HttpExceptionSubscriberBase->onException() (Line: 76)
Drupal\webprofiler\EventDispatcher\TraceableEventDispatcher->dispatch() (Line: 227)
Symfony\Component\HttpKernel\HttpKernel->handleException() (Line: 79)
Symfony\Component\HttpKernel\HttpKernel->handle() (Line: 57)
Drupal\Core\StackMiddleware\Session->handle() (Line: 47)
Drupal\Core\StackMiddleware\KernelPreHandle->handle() (Line: 191)
Drupal\page_cache\StackMiddleware\PageCache->fetch() (Line: 128)
Drupal\page_cache\StackMiddleware\PageCache->lookup() (Line: 82)
Drupal\page_cache\StackMiddleware\PageCache->handle() (Line: 47)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle() (Line: 38)
Drupal\webprofiler\StackMiddleware\WebprofilerMiddleware->handle() (Line: 52)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle() (Line: 23)
Stack\StackedHttpKernel->handle() (Line: 708)
Drupal\Core\DrupalKernel->handle() (Line: 19)
The website encountered an unexpected error. Please try again later.
Drupal\Core\Database\DatabaseExceptionWrapper: SQLSTATE[HY000]: General error: 2006 MySQL server has gone away: INSERT INTO {cache_config} (cid, expire, created, tags, checksum, data, serialized) VALUES (:db_insert_placeholder_0, :db_insert_placeholder_1, :db_insert_placeholder_2, :db_insert_placeholder_3, :db_insert_placeholder_4, :db_insert_placeholder_5, :db_insert_placeholder_6) ON DUPLICATE KEY UPDATE cid = VALUES(cid), expire = VALUES(expire), created = VALUES(created), tags = VALUES(tags), checksum = VALUES(checksum), data = VALUES(data), serialized = VALUES(serialized); Array ( [:db_insert_placeholder_0] => automated_cron.settings [:db_insert_placeholder_1] => -1 [:db_insert_placeholder_2] => 1792085679.609 [:db_insert_placeholder_3] => [:db_insert_placeholder_4] => 0 [:db_insert_placeholder_5] => b:0; [:db_insert_placeholder_6] => 1 ) in Drupal\webprofiler\Cache\CacheBackendWrapper->setMultiple() (line 108 of modules/devel/webprofiler/src/Cache/CacheBackendWrapper.php). 
Drupal\webprofiler\Cache\CacheBackendWrapper->setMultiple() (Line: 105)
Drupal\Core\Config\CachedStorage->readMultiple() (Line: 165)
Drupal\Core\Config\ConfigFactory->doLoadMultiple() (Line: 104)
Drupal\Core\Config\ConfigFactory->doGet() (Line: 89)
Drupal\Core\Config\ConfigFactory->get() (Line: 22)
Drupal\webprofiler\Config\ConfigFactoryWrapper->get() (Line: 50)
Drupal\automated_cron\EventSubscriber\AutomatedCron->__construct() (Line: 259)
Drupal\Component\DependencyInjection\Container->createService() (Line: 173)
Drupal\Component\DependencyInjection\Container->get() (Line: 71)
Drupal\webprofiler\EventDispatcher\TraceableEventDispatcher->dispatch() (Line: 88)
Symfony\Component\HttpKernel\HttpKernel->terminate() (Line: 32)
Stack\StackedHttpKernel->terminate() (Line: 686)
Drupal\Core\DrupalKernel->terminate() (Line: 22)